Defensive publication

ABSTRACT

AN IMPROVED CATALYST SYSTEM FOR REACTING DURABLE PRESS RESINS WITH FABRICS CONTAINING BOTH CELLULOSIC AND NONCELLULOSIC FIBERS CONSISTING OF ZINC HYDROXYACETATE OR A MIXTURE OF HYDROXYACETIC ACID WITH MAGNESIUM CHLORIDE, ZINC CHLORIDE OR ZINC NITRATE, ADJUSTED TO A PH OF 4.5 TO 6.0. THIS CATALYST SYSTEM USED IN THE CONVENTIONAL PADDRY-CURE PROCESS IMPARTS ADEQUATE DURABLE PRESS QUALITIES WITH LESS IMPAIRMENT OF THE TENSILE STRENGTH AND ABRASION RESISTANCE OF THE FABRIC THAN CONVENTIONAL CATALYST SYSTEMS.

DEENSIVE ULiCATlN UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofiice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED MARCH 21, 1972 T896,042 DURABLE PRESS CATALYST SYSTEM Richard N. Knowles, R0. Box 302, RD. 1, Millcreek Road, Hockessin, Del. 19707 Filed Mar. 1, 1971, Ser. No. 119,818 Int. Cl. D06m 9/00 US. Cl. 8--115.7 No Drawing. 14 Pages Specification An improved catalyst system for reacting durable press resins with fabrics containing both cellulosic and noncellulosic fibers consisting of zinc hydroxyacetate or a mixture of hydroxyacctic acid with magnesium chloride, zinc chloride or zinc nitrate, adjusted to a pH of 4.5 to 6.0. This catalyst system used in the conventional paddry-cure process imparts adequate durable press qualities with less impairment of the tensile strength and abrasion resistance of the fabric than conventional catalyst systems. 

